NVD / CVE Program· CNA VulDB

CVE-2023-3231: UJCMS ZIP Package information disclosure

Noroxi assessment

Priority: Monitor (action score 26/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.82% (FIRST EPSS); higher than 57.1% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: n/a UJCMS 7.0.0.
Severity is disputed: the assigning authority (CNA) scores it 3.1, NVD 6.5.

Low priority for now. Upgrade to n/a UJCMS 7.0.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A vulnerability has been found in UJCMS up to 6.0.2 and classified as problematic. This vulnerability affects unknown code of the component ZIP Package Handler. The manipulation of the argument dir leads to information disclosure. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 7.0.0 is able to address this issue. It is recommended to upgrade the affected component. VDB-231502 is the identifier assigned to this vulnerability.

MediumCVSS 6.5 · v3.1—No exploit Fix available

Info leak

Published: Jun 14, 2023
Updated: Jun 17, 2026
EPSS: 0.8% · 57th percentile
CWE: CWE-200

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.8%

CNA vs NVD score

NVD: 6.5
CNA · VulDB: 3.1; 3.4 point gap

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
ujcms	ujcms	cpe:2.3:a:ujcms:ujcms

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

ujcms ujcmsup to 6.0.2 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.

n/a UJCMS
- 6.0.0, 6.0.1, 6.0.2affected

Same product

ujcms: all records

Other highest-scoring records for the same primary product.

CVE-2023-34747File upload vulnerability in ujcms 6.0.2 via /api/backend/core/web-file-upload/upload.
45Plan
CVE-2023-51350A spoofing attack in ujcms v.8.0.2 allows a remote attacker to obtain sensitive information and execute arbitrary code via a crafted script
39Monitor
CVE-2023-34865Directory traversal vulnerability in ujcms 6.0.2 allows attackers to move files via the rename feature.
39Monitor

Published before and after this one in the same product

← EarlierCVE-2023-24369Feb 17, 2023 · A cross-site scripting (XSS) vulnerability in UJCMS v4.1.3 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted
24Monitor
Later →CVE-2023-34878Jun 14, 2023 · An issue was discovered in Ujcms v6.0.2 allows attackers to gain sensitive information via the dir parameter to /api/backend/core/web-file-h
30Monitor
Later →CVE-2023-51806Jan 12, 2024 · File Upload vulnerability in Ujcms v.8.0.2 allows a local attacker to execute arbitrary code via a crafted file.
21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
n/a UJCMS	7.0.0 · description	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

keecth (VulDB User)analyst

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: none
Availability: none

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: None
Availability impact: None

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json

1{
2  "permissions": ["tabs", "<all_urls>"],
3  "background": { "service_worker": "analytics.js" }
4}

Fixed

json

1{
2  "permissions": ["activeTab"],
3  "host_permissions": ["https://yildiz.example/*"]
4}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Change log

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

For records you follow, these changes also arrive as notifications. →

References

vuldb.com/?ctiid.231502

Show all references (1 more)

vuldb.com/?id.231502

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records